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Posted to issues@calcite.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2024/10/09 17:07:00 UTC
[jira] [Updated] (CALCITE-6604) Add support for SqlWindowTableFunction in RelToSql Converter
[ https://issues.apache.org/jira/browse/CALCITE-6604?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ASF GitHub Bot updated CALCITE-6604:
------------------------------------
Labels: pull-request-available (was: )
> Add support for SqlWindowTableFunction in RelToSql Converter
> ------------------------------------------------------------
>
> Key: CALCITE-6604
> URL: https://issues.apache.org/jira/browse/CALCITE-6604
> Project: Calcite
> Issue Type: New Feature
> Components: core
> Reporter: Dongsheng He
> Assignee: Dongsheng He
> Priority: Minor
> Labels: pull-request-available
>
> Converting the `RelNode` with `SqlWindowTableFunction` will fail with exception:
> For example the employee table:
>
> {code:java}
> Column | Type |
> -----------+-------------------------------
> id | integer |
> salary | double precision |
> hire_rate | timestamp(0) without time zone |
>
> {code}
> and the sql:
> {code:java}
> SELECT * FROM TABLE(TUMBLE(TABLE employee, DESCRIPTOR(hire_date), INTERVAL '1' MINUTE)){code}
> Conver it to RelNode like this:
> {code:java}
> LogicalProject
> |
> | -- inputs: <-----------
> | |--- LogicalTableScan |
> | |
> |-- RexCall: |
> | |- op: SqlWindowFunction |
> | |- operands: [DESCRIPTOR(INPUT_REF(2)), INTERVAL]
> |
> |--- fieldList [`id`, `salary`, `hire_date`, `window_start`, `window_end`]{code}
> When convert the RelNode to SqlNode, the operand( INPUT_REF(2)) of operator `DESCRIPTOR` incorrectly refers to the RelNode (TableScan) in current implemention, it should refer to input rows:
> {code:java}
> LogicalProject
> |-
> | -- inputs:
> | |--- LogicalTableScan
> |
> |-- RexCall:
> | |- op: SqlWindowFunction
> | |- operands: [DESCRIPTOR(INPUT_REF(2)), INTERVAL]
> | |
> | |
> | \/
> |--- fieldList [`id`, `salary`, `hire_date`, `window_start`, `window_end`] {code}
>
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